Adenine is a nucleobase, which is a component of nucleotides, the basic building blocks of DNA and RNA.

Aluminium is a chemical element with the symbol Al and atomic number 13.

Ammonia is a compound composed of one nitrogen atom bonded to three hydrogen atoms.

Cytosine (symbol C or Cyt) is one of the four nucleobases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA).

DNA, also known as deoxyribonucleic acid, is a molecule that carries the genetic instructions used in the growth, development, functioning, and reproduction of all known living organisms and many viruses.

A hydrogen bond is a type of chemical bond that occurs between a hydrogen atom and an electronegative atom, such as nitrogen, oxygen, or fluorine.

NASA (National Aeronautics and Space Administration) is an independent agency of the United States federal government responsible for the country's civilian space program and for aeronautics and aerospace research.

Nucleic acids are a type of biological molecule that play a critical role in the storage, transmission, and expression of genetic information.